hantavirus misinformation – As hantavirus cases tied to the MV Hondius were reported to the WHO on May 2, misinformation about treatments and vaccines spread quickly online—mirroring COVID-era conspiracy patterns. Researchers say fear itself travels fast on social media, and warn people
When the first hantavirus cases aboard the MV Hondius were reported to the World Health Organization on May 2, the timeline that mattered most to many people was no longer the science—it was the speed of what showed up on their feeds.
Since then, misinformation about the outbreak has moved quickly through familiar channels. Some claims echo COVID-era conspiracy theories, including false assertions that ivermectin is known to effectively treat hantavirus and rumors that vaccines caused the outbreak.
“It’s operating not like isolated rumors but more like a standing online ecosystem. ” says Katrine Wallace. an epidemiologist at the University of Illinois Chicago.. In her description, the misinformation doesn’t wait for facts.. Instead, it behaves like something built to plug into any new threat “within hours,” she says.
For public health researchers, the challenge is twofold: separating bad-faith claims from misinformation that spreads because people are scared, and then figuring out how to respond without amplifying the panic.
Monica Wang, a public health researcher at Boston University who studies health misinformation, points to what she calls the lingering emotional fallout from COVID-19—“residual fear, exhaustion and distrust”—as a reason misinformation finds fertile ground.
Wallace and Wang both stress that people aren’t just dealing with a rare disease and a rare outbreak. They’re also dealing with an information environment built to reward engagement, not accuracy.
Before taking the bait, Wang and Wallace say it helps to begin with what scientists already know—and to resist the impulse to fill gaps with worst-case scenarios.
To calibrate concern appropriately, Wang says the goal should be “not to dismiss concern but to calibrate concern appropriately based on evidence.”
Part of the reason the outbreak is being talked about so intensely is that it involves the Andes type of hantavirus.. While this strain isn’t new to researchers, outbreaks are scarce, and that novelty can trigger disproportionate attention.. Wang says the public is responding to uncertainty the way many people did at the start of COVID—treating an unfamiliar threat as if it must be a pandemic.
But the situations are different in several key ways.
First, Andes hantavirus has been previously studied by epidemiologists, while SARS-CoV-2 was entirely new to science.. Second. this hantavirus is considered harder to spread from person to person and usually requires close contact. though airborne spread cannot be ruled out.. Third, the hantavirus outbreak is considered contained; the people most at risk of hantavirus are quarantining and being monitored.. And fourth. epidemiologists suspect hantavirus is most contagious when an infected person is showing symptoms. while SARS-CoV-2 can be transmitted by seemingly healthy people.
“It’s very hard [for people] to grasp the science of a new disease,” Wallace says.
That difficulty helps explain why COVID-era narratives keep resurfacing, even when the biology doesn’t line up.. When something about the current outbreak doesn’t fit expectations. it becomes easy to lean on older explanations—like the belief that authorities are withholding key information. or the idea that ivermectin is a cure-all.. There is no evidence, Wang notes, that ivermectin can treat hantavirus.
These theories can become especially powerful when they are amplified by high-profile figures and influencers.. Wallace points to how quickly hantavirus has been folded into the same online ecosystems that helped drive distrust during COVID. naming former congressional representative of Georgia Marjorie Taylor Greene and popular health influencers among those who can lend visibility to misinformation.
Wang says that fear isn’t just a reaction—it can shape how people think.
“Humans aren’t wired for happiness.. They’re wired for survival,” she says.. When there’s a potential threat. people try to find out as much information as possible. and their attention can snap toward posts that trigger fear. surprise or disgust because they raise the question: “Is my physical safety. or my social or emotional safety. under threat?”
Psychologists describe this as a negativity bias, more specifically threat bias. The effect shows up plainly on social media: fear-driven posts about a virus tend to draw more attention than measured or reassuring messages.
Wallace says platform systems reinforce that dynamic. “These social media platforms, they reward engagement, not facts,” she says. If a video appears in a person’s feed, she adds, it’s likely there because it is engaging—not because it is accurate.
That means the burden falls on individuals to spot red flags before they share or act.
Wallace advises being suspicious of posts that project absolute certainty or confidence. “People who speak in certainties” likely won’t be trustworthy sources, she says, pointing to the way responsible doctors and scientists handle uncertainty—by clearly stating what they don’t know.
She also cautions that misinformation can be driven by different motives. Sometimes people spread it because they stand to make money by selling a product through a link in their profile’s bio or by monetizing attention. Other times, Wallace says, misinformation is about clout.
Right now, she advises particular caution around accounts telling people to panic.
The scale of the challenge is part of what makes the current outbreak so tricky.. A Pew Research Center survey released last week found that 40 percent of adults in the U.S.. get health and wellness information from social media and podcasts.. With hantavirus dominating headlines, people are more likely than usual to encounter health content through algorithmic feeds.
Wallace’s concern is that this isn’t just a one-off wave of false claims. “I worry that this represents sort of a pattern of conspiratorial framing that people are now just applying to whatever health threat comes up,” she says.
The result, she says, is an imbalance in speed: “because of the way social media works,” misinformation will spread faster than evidence-based information can reach people.
For readers trying to keep up. Wang and Wallace’s guidance converges on one practical point: don’t let fear write the story.. Focus on what evidence supports. treat uncertainty as uncertainty—not as a license for worst-case speculation—and be wary when a post demands panic or speaks as if facts are already settled.
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